prediator
Melting Slicks
Joined: Sep 2005
Posts: 2,568
Likes: 264
From: Near Charlotte NC
Ok,here's my .02 worth.
I have an 02Z with VRB2,PowerDuct & Halltech MAF screen,that's all for mods.I bought an older model U7198 for a very good price and I like it.
I installed the Performance Tune and I would estimate that I gained about 15hp & about 10 lbs of tq.That is just how it feels to me.
I also turned off the CAGS and adjusted the fans.You can do lot's more than that PLUS I like the fact I can reinstall the OEM tune anytime.Most folks would agree a dyno tune is better,but if you are NOT going to drag/track your car,this is pretty good.
Tune takes about 15 min.Well worth the money to me.
If he has an older model,I would spend the extra $100 for a new one.They have better logging and can be updated by the Inet.
These folks have a good price:
http://www.concoursdirect.com/99gmgasveprp.html
Either way,make sure you register the unit and join the forum.Lot's of good info there.
http://www.diablosport.com/index.php...BB2&file=index
\db2
Carolina
I have an 02Z with VRB2,PowerDuct & Halltech MAF screen,that's all for mods.I bought an older model U7198 for a very good price and I like it.
I installed the Performance Tune and I would estimate that I gained about 15hp & about 10 lbs of tq.That is just how it feels to me.
I also turned off the CAGS and adjusted the fans.You can do lot's more than that PLUS I like the fact I can reinstall the OEM tune anytime.Most folks would agree a dyno tune is better,but if you are NOT going to drag/track your car,this is pretty good.
Tune takes about 15 min.Well worth the money to me.
If he has an older model,I would spend the extra $100 for a new one.They have better logging and can be updated by the Inet.
These folks have a good price:
http://www.concoursdirect.com/99gmgasveprp.html
Either way,make sure you register the unit and join the forum.Lot's of good info there.
http://www.diablosport.com/index.php...BB2&file=index
\db2
Carolina
Supporting Vendor
Joined: Aug 2007
Posts: 1,451
Likes: 86
From: CT
you will notice nice improvements with it... but as dbaker said, you're better off getting a brand new one - it will allow you to save data logs, and do internet downloadable updates... go to concoursdirect.com as he indicated with his link - they have them brand new - with the 2 year warranty, for only 299...
you'll gain better throttle response, better acceleration, and a solid 15-20 hp/tq gain.
also as dbaker stated, join diablosports forums, there's a lot of good info and tutorials over there about how to do the datalogging correctly, how to get your fueling dialed in for even better improvements, etc etc.
and a custom tune can be had for a very reasonable cost, which will gain you even more throttle response, accleration, stronger/harder pull, and better mileage - all via email.
you'll gain better throttle response, better acceleration, and a solid 15-20 hp/tq gain.
also as dbaker stated, join diablosports forums, there's a lot of good info and tutorials over there about how to do the datalogging correctly, how to get your fueling dialed in for even better improvements, etc etc.
and a custom tune can be had for a very reasonable cost, which will gain you even more throttle response, accleration, stronger/harder pull, and better mileage - all via email.
__________________
06MonteSS / DiabLew Tune
2014 Camaro 2SS/RS LS3, short-throw shifter, NPP perf. exhaust, BMR strut-tower brace, Cold Air Inductions cold air intake, catch-can, ported/polished TB, Custom DiabLew Tune
www.diablewtune.com -- www.diablocustomtune.com -- www.diablocustomtunegm.com
06MonteSS / DiabLew Tune
2014 Camaro 2SS/RS LS3, short-throw shifter, NPP perf. exhaust, BMR strut-tower brace, Cold Air Inductions cold air intake, catch-can, ported/polished TB, Custom DiabLew Tune
www.diablewtune.com -- www.diablocustomtune.com -- www.diablocustomtunegm.com
Last edited by 06MonteSS; Nov 12, 2009 at 10:16 AM.
Race Director
Joined: Dec 2000
Posts: 17,786
Likes: 5
From: Florida
I also adjusted my fans slightly and the highest temp I've seen is 201...lovin' it and I haven't even gotten around to swapping in a lower t-stat yet. The best $200 (from a Craigslist ad) I ever spent on this car. This car is also my DD so keeping it reliable and virtually all stock is important to me.
-Dean
Last edited by BaseballDude; Nov 3, 2009 at 10:55 PM.
Supporting Vendor
Joined: Aug 2007
Posts: 1,451
Likes: 86
From: CT
I just added (this past Sunday) the Performance Tune to a bone stock '02 Z06 and I'm impressed with the improved throttle response and slightly better acceleration. What exactly does this program modify? I have to think that the injectors are working a little harder and the timing was advanced a couple degrees. Does anyone know what the stock U7198 Performance Tune (v9r03, I think) specifically adjusts?
I also adjusted my fans slightly and the highest temp I've seen is 201...lovin' it and I haven't even gotten around to swapping in a lower t-stat yet. The best $200 (from a Craigslist ad) I ever spent on this car. This car is also my DD so keeping it reliable and virtually all stock is important to me.
-Dean
I also adjusted my fans slightly and the highest temp I've seen is 201...lovin' it and I haven't even gotten around to swapping in a lower t-stat yet. The best $200 (from a Craigslist ad) I ever spent on this car. This car is also my DD so keeping it reliable and virtually all stock is important to me.
-Dean
as far as what the diablo tune adjusts, there are a bunch of things... timing, knock retard settings, torque management, WOT fueling, etc etc etc...
Melting Slicks
Joined: Sep 2005
Posts: 2,568
Likes: 264
From: Near Charlotte NC
I just added (this past Sunday) the Performance Tune to a bone stock '02 Z06 and I'm impressed with the improved throttle response and slightly better acceleration. What exactly does this program modify? I have to think that the injectors are working a little harder and the timing was advanced a couple degrees. Does anyone know what the stock U7198 Performance Tune (v9r03, I think) specifically adjusts?
I also adjusted my fans slightly and the highest temp I've seen is 201...lovin' it and I haven't even gotten around to swapping in a lower t-stat yet. The best $200 (from a Craigslist ad) I ever spent on this car. This car is also my DD so keeping it reliable and virtually all stock is important to me.
-Dean
I also adjusted my fans slightly and the highest temp I've seen is 201...lovin' it and I haven't even gotten around to swapping in a lower t-stat yet. The best $200 (from a Craigslist ad) I ever spent on this car. This car is also my DD so keeping it reliable and virtually all stock is important to me.
-Dean
As soon as I start back working steady,I'll Upgrade mine to do logs.
Enjoy...
\db2
Carolina
Safety Car
Joined: Apr 2008
Posts: 4,829
Likes: 1,843
From: NJ
2025 C8 of the Year Finalist - Modified
2023 C8 of the Year Finalist - Unmodified
2022 C7 of the Year Finalist - Modified
2021 C7 of the Year Finalist - Unmodified
Could someone please tell me how to adjust the torque management with the Diablo? How do you go into it to fine tune/adjust parameters? (Thanks)
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
5 MOST and 5 LEAST Popular Corvette Model Years in History!
Joe Kucinski
2027 Corvette Buyer's Guide: Everything You Need to Know!
Joe Kucinski
Supporting Vendor
Joined: Aug 2007
Posts: 1,451
Likes: 86
From: CT
you have a manual, or an auto? no torque management in a manual stick...
if you have an auto, you should have the TM parameter available - BUT, if you have the newer version predator on a 9rXX revision, you won't have the 3 TM settings that they talk about in the above link... you will only have 1 setting - the third one in that list... the first two items are already done in the current tunes, so those first 2 parameters are not available via the predator anymore, since it's done in the tunes already.
hook up to your car... select the same diablo tune that you installed before... then go to MODIFY TUNE...
scroll through the list of parameters that you have available to adjust...
should be one called Torque Management...
you'd make your change, press the center button to save the change, then press the ESC button a few times to back out of the menus, and it will ask you "Install tune now?" - select YES and it will install the modified tune to your car.
Last edited by 06MonteSS; Nov 4, 2009 at 01:25 PM.
Race Director
Joined: Dec 2000
Posts: 17,786
Likes: 5
From: Florida
That's exactly what I bought. I think the 180 will lower my freeway cruise temp from 190-192 to perhaps high 180's. And that present 201 peak should drop to around 196-198, and I would be pleased with that. Even had the A/C on today and never saw above 201.
-Dean
-Dean
Safety Car
Joined: Apr 2008
Posts: 4,829
Likes: 1,843
From: NJ
2025 C8 of the Year Finalist - Modified
2023 C8 of the Year Finalist - Unmodified
2022 C7 of the Year Finalist - Modified
2021 C7 of the Year Finalist - Unmodified
Thanks O6Monte! I reallllly appreciate it! 
